7qwp

CryoEM structure of bacterial transcription close complex (RPc)

Method: ELECTRON MICROSCOPY Dmax: 175.8 Å Quality: GOOD

1. Protein Identity and Related Structures Protein Identity & Related Structures

DNA-directed RNA polymerase subunit alpha

Escherichia coli K-12

UniProt P0A7Z4

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 6 DNA 2 PDB declaration: octameric(8) Consistent with all polymer counts Chain A; UniProt 1–329 Chain B; UniProt 1–329 Not recorded DNA-directed RNA polymerase subunit beta × 1 (P0A8V2) ;DNA-directed RNA polymerase subunit beta' ; × 1 (P0A8T7) DNA-directed RNA polymerase subunit omega × 1 (P0A800) RNA polymerase sigma-54 factor × 1 (A0A0N9UTC1) Non-Template promoter DNA × 1 Template promoter DNA × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8;20 mM Tris-HCl pH 8.0, 150 mM KCl, 10 mM MgCl2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.40 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

276 other PDB entries and 305 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RPOA_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–329; UniProt 1–329 Author chain B; PDBConstruct 1–329; UniProt 1–329

DNA-directed RNA polymerase subunit beta

Escherichia coli K-12

UniProt P0A8V2

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 6 DNA 2 PDB declaration: octameric(8) Consistent with all polymer counts Chain C; UniProt 1–1342 Not recorded DNA-directed RNA polymerase subunit alpha × 2 (P0A7Z4) ;DNA-directed RNA polymerase subunit beta' ; × 1 (P0A8T7) DNA-directed RNA polymerase subunit omega × 1 (P0A800) RNA polymerase sigma-54 factor × 1 (A0A0N9UTC1) Non-Template promoter DNA × 1 Template promoter DNA × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8;20 mM Tris-HCl pH 8.0, 150 mM KCl, 10 mM MgCl2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.40 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

219 other PDB entries and 240 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RPOB_ECOLI
Isoform
PDB entities 2
Chains and sequence ranges Author chain C; PDBConstruct 1–1342; UniProt 1–1342

;DNA-directed RNA polymerase subunit beta' ;

Escherichia coli K-12

UniProt P0A8T7

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 6 DNA 2 PDB declaration: octameric(8) Consistent with all polymer counts Chain D; UniProt 1–1407 Not recorded DNA-directed RNA polymerase subunit alpha × 2 (P0A7Z4) DNA-directed RNA polymerase subunit beta × 1 (P0A8V2) DNA-directed RNA polymerase subunit omega × 1 (P0A800) RNA polymerase sigma-54 factor × 1 (A0A0N9UTC1) Non-Template promoter DNA × 1 Template promoter DNA × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8;20 mM Tris-HCl pH 8.0, 150 mM KCl, 10 mM MgCl2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.40 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

239 other PDB entries and 275 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RPOC_ECOLI
Isoform
PDB entities 3
Chains and sequence ranges Author chain D; PDBConstruct 1–1407; UniProt 1–1407

DNA-directed RNA polymerase subunit omega

Escherichia coli K-12

UniProt P0A800

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 6 DNA 2 PDB declaration: octameric(8) Consistent with all polymer counts Chain E; UniProt 1–91 Not recorded DNA-directed RNA polymerase subunit alpha × 2 (P0A7Z4) DNA-directed RNA polymerase subunit beta × 1 (P0A8V2) ;DNA-directed RNA polymerase subunit beta' ; × 1 (P0A8T7) RNA polymerase sigma-54 factor × 1 (A0A0N9UTC1) Non-Template promoter DNA × 1 Template promoter DNA × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8;20 mM Tris-HCl pH 8.0, 150 mM KCl, 10 mM MgCl2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.40 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

258 other PDB entries and 277 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RPOZ_ECOLI
Isoform
PDB entities 4
Chains and sequence ranges Author chain E; PDBConstruct 1–91; UniProt 1–91

RNA polymerase sigma-54 factor

Klebsiella pneumoniae

UniProt A0A0N9UTC1

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 6 DNA 2 PDB declaration: octameric(8) Consistent with all polymer counts Chain M; UniProt 1–477 Not recorded DNA-directed RNA polymerase subunit alpha × 2 (P0A7Z4) DNA-directed RNA polymerase subunit beta × 1 (P0A8V2) ;DNA-directed RNA polymerase subunit beta' ; × 1 (P0A8T7) DNA-directed RNA polymerase subunit omega × 1 (P0A800) Non-Template promoter DNA × 1 Template promoter DNA × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8;20 mM Tris-HCl pH 8.0, 150 mM KCl, 10 mM MgCl2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.40 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

5 other PDB entries and 5 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name A0A0N9UTC1_KLEPN
Isoform
PDB entities 5
Chains and sequence ranges Author chain M; PDBConstruct 21–497; UniProt 1–477

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 7qwp

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7qwp
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7qwp
Deposition date deposition_date2022-01-25
Structure title titleCryoEM structure of bacterial transcription close complex (RPc)
Keywords keywordsCryo EM, RNA polymerase, transcription close complex, sigma54, TRANSCRIPTION; TRANSCRIPTION
Experimental Method methodELECTRON MICROSCOPY

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier53.49
Radius of gyration Rg (electron density) rg_electron51.81
Forward intensity I(0) i02683470000.00
Molecular weight molecular_weight413620.0 kDa
Excluded volume excluded_volume510040 ų
Envelope volume envelope_volume814980 ų
Hydration-shell volume shell_volume124730 ų
Envelope diameter envelope_diameter190.7
Shell Rg shell_rg59.60
Envelope Rg envelope_rg51.59
Shape Rg shape_rg51.78
Total Rg total_rg52.14
Total atoms total_atoms29006
Residues n_residues3757
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax175.8
Rg (real space) rg_real53.31
Rg uncertainty (real space) rg_real_error1.25
I(0) (real space) i0_real2.6830e+09
I(0) uncertainty (real space) i0_real_error5.6560e+07
Rg (reciprocal space) rg_reciprocal53.64
I(0) (reciprocal space) i0_reciprocal2685000000.0000
Solution quality estimate total_estimate0.8667
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary66.7
Skewness Skewness skewness0.249
Kurtosis Kurtosis kurtosis-0.248
Angular range angular_range— – 0.1450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha292500000.0000
Real-space data points n_real_points30
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.822; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.955; Smooth: 0.841

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id7qwpA01
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology120 — RNA Polymerase Alpha Subunit; Chain A, domain 2
Homologous superfamily homologous superfamily12 — DNA-directed RNA polymerase, insert domain
Domain ID domain_id7qwpB01
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology120 — RNA Polymerase Alpha Subunit; Chain A, domain 2
Homologous superfamily homologous superfamily12 — DNA-directed RNA polymerase, insert domain
Domain ID domain_id7qwpD01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology132 — Topoisomerase I; Chain A, domain 4
Homologous superfamily homologous superfamily30 — RNA polymerase Rpb1 funnel domain
Domain ID domain_id7qwpE01
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology940 — Eukaryotic RPB6 RNA polymerase subunit
Homologous superfamily homologous superfamily10 — RNA polymerase subunit, RPB6/omega

8. Citations (1)

9. Files and Curves (10)